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authorChristoph Hellwig <hch@lst.de>2022-10-18 16:55:55 +0200
committerChristoph Hellwig <hch@lst.de>2022-10-19 12:42:58 +0200
commit6b8cf94005187952f794c0c4ed3920a1e8accfa3 (patch)
treea11e6ba1ce89a371e46394c033a5a35349e602f9 /drivers/nvme
parent6ff5ba97960821fb872ad981eb30374f5cee1fd9 (diff)
nvme-hwmon: consistently ignore errors from nvme_hwmon_init
An NVMe controller works perfectly fine even when the hwmon initialization fails. Stop returning errors that do not come from a controller reset from nvme_hwmon_init to handle this case consistently. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/core.c6
-rw-r--r--drivers/nvme/host/hwmon.c13
2 files changed, 13 insertions, 6 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 9cbe7854d488..dc4220600585 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -3262,8 +3262,12 @@ int nvme_init_ctrl_finish(struct nvme_ctrl *ctrl)
return ret;
if (!ctrl->identified && !nvme_discovery_ctrl(ctrl)) {
+ /*
+ * Do not return errors unless we are in a controller reset,
+ * the controller works perfectly fine without hwmon.
+ */
ret = nvme_hwmon_init(ctrl);
- if (ret < 0)
+ if (ret == -EINTR)
return ret;
}
diff --git a/drivers/nvme/host/hwmon.c b/drivers/nvme/host/hwmon.c
index 0a586d712920..23918bb7bdca 100644
--- a/drivers/nvme/host/hwmon.c
+++ b/drivers/nvme/host/hwmon.c
@@ -230,7 +230,7 @@ int nvme_hwmon_init(struct nvme_ctrl *ctrl)
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
- return 0;
+ return -ENOMEM;
data->ctrl = ctrl;
mutex_init(&data->read_lock);
@@ -238,8 +238,7 @@ int nvme_hwmon_init(struct nvme_ctrl *ctrl)
err = nvme_hwmon_get_smart_log(data);
if (err) {
dev_warn(dev, "Failed to read smart log (error %d)\n", err);
- kfree(data);
- return err;
+ goto err_free_data;
}
hwmon = hwmon_device_register_with_info(dev, "nvme",
@@ -247,11 +246,15 @@ int nvme_hwmon_init(struct nvme_ctrl *ctrl)
NULL);
if (IS_ERR(hwmon)) {
dev_warn(dev, "Failed to instantiate hwmon device\n");
- kfree(data);
- return PTR_ERR(hwmon);
+ err = PTR_ERR(hwmon);
+ goto err_free_data;
}
ctrl->hwmon_device = hwmon;
return 0;
+
+err_free_data:
+ kfree(data);
+ return err;
}
void nvme_hwmon_exit(struct nvme_ctrl *ctrl)